title: Manipulating single-wall carbon nanotubes by chemical doping and charge transfer with perylene dyes.
abstract: Single-wall carbon nanotubes (SWNTs) are emerging as materials with much potential in several disciplines, in particular in electronics and photovoltaics. The combination of SWNTs with electron donors or acceptors generates active materials, which can produce electrical energy when irradiated. However, SWNTs are very elusive species when characterization of their metastable states is required. This problem mainly arises because of the polydispersive nature of SWNT samples and the inevitable presence of SWNTs in bundles of different sizes. Here, we report the complete and thorough characterization of an SWNT radical ion-pair state induced by complexation with a perylene dye, which combines excellent electron-accepting and -conducting features with a five-fused ring π-system. At the same time, the perylene dye enables the dispersion of SWNTs by means of π-π interactions, which gives individual SWNTs in solution. This work clears a path towards electronic and optoelectronic devices in which regulated electrical transport properties are important.
authors.affiliation: Friedrich-Alexander-Universität Erlangen-Nürnberg, Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, Egerlandstrasse 3, 91058 Erlangen, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Ehli
authors.forename: Christian
authors.initials: C
authors.lastname: Oelsner
authors.forename: Dirk M
authors.initials: DM
authors.lastname: Guldi
authors.forename: Aurelio
authors.initials: A
authors.lastname: Mateo-Alonso
authors.forename: Maurizio
authors.initials: M
authors.lastname: Prato
authors.forename: Cordula
authors.initials: C
authors.lastname: Schmidt
authors.forename: Claudia
authors.initials: C
authors.lastname: Backes
authors.forename: Frank
authors.initials: F
authors.lastname: Hauke
authors.forename: Andreas
authors.initials: A
authors.lastname: Hirsch
mesh_terms: D004396:Coloring Agents / Q000737:chemistry*; D004579:Electron Transport; D018625:Microscopy, Atomic Force; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure; D010569:Perylene / Q000737:chemistry*; D019265:Spectroscopy, Near-Infrared; D013059:Spectrum Analysis, Raman
chemical_list: D004396:Coloring Agents; D037742:Nanotubes, Carbon; D010569:Perylene